Home / 4,839.78-7,259.40-1,918.38

Finding the Fourth Proportional to 4,839.78, 7,259.40 and 1,918.38

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Solution

The fourth proportional to 4,839.78, 7,259.40 and 1,918.38 is: 2,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,839.78 : 7,259.40 = 1,918.38 : x
  2. Step 2: Convert to fraction form
    4,839.78/7,259.40 = 1,918.38/x
  3. Step 3: Cross multiply
    4,839.78x = 7,259.40 × 1,918.38
  4. Step 4: Simplify right side
    4,839.78x = 13,926,287.77
  5. Step 5: Solve for x
    x = 13,926,287.77/4,839.78
  6. Step 6: Final answer
    x = 2,877.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.